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<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <table border="1" width="400px" height="200px">

        <tr>
            <td>单元格</td>
            <td>单元格</td>
            <td>单元格</td>
            <td>单元格</td>
        </tr>
        <tr>
           
            <td>单元格</td>
            <td>单元格</td>
        </tr>
        <tr>
            <td>单元格</td>
            <td>单元格</td>
            <td>单元格</td>
            <td>单元格</td>
        </tr>
    </table>
    <p>=======================================================================================</p>
    <table border="2" width="400px" height="200px">
        <tr>
            <td colspan="5">  单元格一     </td>
            
           
          
        </tr>
        <tr>
            <td>单元格6</td>
            <td>单元格7</td>
            <td>单元格8</td>
            <td>单元格9</td>
            <td>单元格10</td>
        </tr>
            
        <tr>
            <td>单元格11</td>
            <td>单元格12</td>
            <td>单元格13</td>
            <td colspan="2" rowspan="2">14,15,19,20</td>
           
        </tr>
        <tr>
            <td>单元格16</td>
            <td>单元格17</td>
            <td>单元格18</td>
            
        </tr>
        <tr>
            <td colspan="2">21,22</td>
            
            <td>单元格23</td>
            <td>单元格24</td>
            <td>单元格25</td>
        </tr>
    </table>
</body>

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